
.top{
    background-color: black;
    text-align: right;
    line-height: 40px;
    font-size: 20px;
}
.top a{
    color: white;
    margin: 10px;
}
.nva{
    line-height: 40px;
}

.left{
    float: left;
    width: 20%;
    text-align: center;
}
.left img{
    width: 38px;
    height: 38px;
}
/*左侧文字*/
.left span{
    vertical-align: 50%;    /*文字垂直居中对齐*/
}
.center{
    float: left;
    width: 60%;
}
.right{
    float: left;
    width: 20%;
}
.bottom{
    clear: both;
    background-color: blue;
    text-align: center;
}
.bottom a{
    color: white;
}
a{
    text-decoration: none;
    color: black;
}
a:hover{
    color: red;
}
